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Topic: Arthropoda

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	Arthropod - Wikipedia, the free encyclopedia
		Arthropods (Phylum Arthropoda) are the largest phylum of animals and include the insects, arachnids, crustaceans, and other similar creatures.
		In approximate statistics, over eighty percent extant (living today) animal species are arthropods, with over a million modern species described and a fossil record reaching back to the early Cambrian.
		The Arthropoda make up a very successful phylum— 75% of all animals on Earth are arthropods.
	en.wikipedia.org /wiki/Arthropoda (1100 words)

	ARTHROPODA (Site not responding. Last check: 2007-10-22)
		Arthropoda means jointed leg, and refers to the jointed chitinous exoskeleton that is the hallmark of the most diverse phylum, with over 500,000 species.
		The Phylum Arthropoda consists three great groups: 1) the Superclass Crustacea, which includes shrimp, lobsters, isopods, and many other classes; 2) the Superclass Unirami, which includes the millipedes (and relatives, and the insects; and 3) the Chelicerata, which includes the horseshoe crabs, the scorpions, and the spiders, among others.
		The Crustacea are mostly aquatic, the Unirami mostly terrestrial, and the Chelicerata, is split between marine and terrestrial forms.
	www.ldeo.columbia.edu /users/gregory/arthropoda.html (439 words)

	Arthropoda
		Tactopoda holds a rank intermediate between Arthropoda and Euarthropoda: If the Arthropoda are treated as a phylum, as here, then the rank is between phylum and supersubphylum.
		If the Arthropoda are considered a superphylum (a very reasonable alternative) then the Tactopoda might legitimately be treated as a phylum.
		Pocock R.I. On the Classification of the Tracheate Arthropoda.
	www.peripatus.gen.nz /Taxa/Arthropoda/Index.html (4669 words)

	The Trilobites, Crabs, Insects, Spiders and their Allies (Phylum Arthropoda)
		The phylum Arthropoda is huge in terms of both numbers of species and in terms of numbers of individuals.
		As insects their value as pollinators of flowering plants and therefore as preservers of floral diversity is incalculable, while there contribution to modern biological and ecological research is equally extensive.
		The arthropoda have been around for a long time and several major, and many minor lineags are now extinct, perhaps the most well know of these are the Trilobites.
	www.earthlife.net /inverts/arthropoda.html (1110 words)

	Arthropoda
		The inability of these organisms to supply oxygen to large bodies (through a series of skeletal pores called spiricals and tracks, or tracheae) prevents them growing too large.
		Arthropoda have a ventral nerve cord and a complete digestive tract.
		They include the largest Arthropoda, the lobster, which can reach 44 pounds.
	www.sidwell.edu /us/science/vlb/classlab/animalia/arthropoda.html (90 words)

	Arthropoda
		A phylogenetic analysis of Myriapoda (Arthropoda) using two nuclear protein-encoding genes.
		Strausfeld N. Crusteacean-insect relationships: The use of brain characters to derive phylogeny amongst segmented invertebrates.
		A larval sea spider (Arthropoda: Pycnogonida) from the Upper Cambrian 'Orsten' of Sweden, and the phylogenetic position of pycnogonids.
	tolweb.org /tree?group=Arthropoda&contgroup=Bilateria (1191 words)

	Arthropoda (Site not responding. Last check: 2007-10-22)
		Introduction to the Arthropoda Introduction to the Arthropoda...
		Annelida and Arthropoda are not sister taxa: a phylogenetic analysis of spiralian...
		Arthropoda, a phylum within Kingdom Animalia, is the most diverse of all the phyla...
	www.alliedcomputing.com /gateway/Arthropoda.php (474 words)

	Arthropoda
		Because the jointed exoskeleton blocks growth of the organism, it must be shed periodically.
		Arthropoda: Subphylum Trilobita - Subphylum Trilobita The trilobites comprise a wholly extinct group of primitive marine arthropods.
		crustacean: Classification - Classification Crustaceans constitute the subphylum Crustacea of the phylum Arthropoda.
	www.infoplease.com /ce6/sci/A0804873.html (161 words)

	Quinto Semestre :: Diversidad Animal 2
		Phylum Arthropoda - (Inglés) Información general de los grupos que lo componen.
		Phylum Arthropoda - Clases: crustacea, chilopoda, diplopoda, pauropoda, symphyla, insecta y arácnida.
		Phylum Arthropoda - (Inglés) Generalidades de artrópodos y en especial de crustáceos.
	biologia.iztacala.unam.mx /directorio/diversidad_animal2.html (2145 words)

	phylum Arthropoda
		Phylum Arthropoda is, by far, the most diverse phylum of kingdom Animalia.
		You are expected to study the material as called for in the laboratory-manual.
		Here is a list of preserved material of the Arthropoda that is available in the Biology Department.
	inside.msj.edu /academics/faculty/davisr/potpouri/arthropo.htm (1079 words)

	Arthropoda Science, Directory (Site not responding. Last check: 2007-10-22)
		Arthropoda Phylogeny, bibliography, and links from the Tree of Life Project.
		Phylum Arthropoda Philip Myers's introduction to Phylum Arthropoda, from the Animal Diversity Web.
		Introduction to the Arthropoda The Arthropods, the largest animal phylum, includes insects, spiders, crustaceans, and others.
	www.wacofdn.org /d2RjXzcxMDg1.aspx (358 words)

	Palaeos Invertebrates: Arthropoda: Arthropod References
		Snodgrass, R. Evolution of Annelida, Onychophora and Arthropoda.
		Tiegs, O. and Manton, S.M. 1958 "The evolution of the Arthropoda,"
		Turbeville, JM, DM Pfeifer, KG Field and RA Raff (1991), The phylogenetic status of arthropods, as inferred from 18S rRNA sequences.
	www.palaeos.com /Invertebrates/Arthropods/references.html (533 words)

	Natural Perspective: Joint-Legs (Phylum Arthropoda) (Site not responding. Last check: 2007-10-22)
		Arthropoda, the jointed leg spineless creatures of the world, are among the most maligned of all animals.
		Many people adore Butterflies of the Order Lepidoptera and the ancient Egyptians even worshipped the Scarab Beetle of Order Coleoptera but on the whole, when modern governments spend money on Arthropods it is to find a way of eradicating them.
		The majority of Arthropoda -- 290,000 species -- are insects.
	perspective.com /nature/animalia/arthropoda.html (227 words)

	Hexapoda
		Ultrastructure of attachment specializations of hexapods, (Arthropoda): evolutionary patterns inferred from a revised ordinal phylogeny.
		Molecular phylogeny of the apterygotan insects based on nuclear and mitochondrial genes.
		Volumes 3 and 4 of Part R, Arthropoda 4 of Treatise on Invertebrate Paleontology.
	phylogeny.arizona.edu /tree/eukaryotes/animals/arthropoda/hexapoda/hexapoda.html (1242 words)

	Omniseek: Pets and Animals: /Pets & Animals /Arthropoda
		"Animals" / Arthropoda / Insecta "Animals" / Arthropoda / Insecta / Coleoptera "Animals" / Arthropoda / Insecta / Coleoptera / Carabidae "Animals" / Arthropoda / Insecta / Coleoptera / Chrysomelidae...
		Arthropoda (Ar-THROP-a-duh) is located in the Trifid Nebula of the Sagittarius arm of the Milky Way galaxy, one of a handful of Outer System planets discovered by the flurry of Andromeda probes launched during the...
		Photograph the organisms Write a descriptive paragraph Results Arthropoda is the largest phylum in the kingdom Animalia containing over 875,000 known species.
	petsandanimals.omniseek.com /srch/{47357} (221 words)

	Spiders of NW-Europe
		Both belong to the phylum Arthropoda in the animal kingdom, which consists of animals with segmented bodies and jointed appendages.
		The phylum Arthropoda is divided into 5 classes.
		Animals with 4 pairs of legs such as spiders belong to the class called Arachnida and animals with 3 pairs of legs such as insects belong to the class called Insecta.
	www.xs4all.nl /~ednieuw/Spiders/spidhome.htm (1202 words)

	The world's top Arthropoda websites (Site not responding. Last check: 2007-10-22)
		Science / Biology / Flora and Fauna / Animalia / Arthropoda
		NOTE: Some classification schemes group Myriapoda and Hexapoda into one subphylum called Uniramia.
		Over four out of five extant (living today) animal species are arthropods, with over a million modern species described and a fossil record reaching back to the early Cambrian.
	dirs.org /dir-wiki.cfm/Top/Science/Biology/Zoology/Arthropoda (942 words)

	Phylum Arthropoda free essays
		There are five main groups of Arthropods: horseshoe crabs, arachnids, crustaceans, centipedes and millipedes, and insects.
		Crustaceans are nearly all aquatic and consist of lobsters, crabs, shrimps, barnacles, etc. Phylum Arthropoda make up about two-thirds of the earth’s organisms, and includes 1 million named species (estimated total species number rising to 30 million).Arthropods are currently thought to have evolved from Annelids.
		All Arthropods are bilaterally symmetrical, and their bodies are covered with a tough exoskeleton.
	www.needfreeessays.com /viewpaper/2825.html (224 words)

	Introduction to the Arthropoda (Site not responding. Last check: 2007-10-22)
		The phylum takes its name from its distinctive jointed appendages, which may be modified in a number of ways to form antennae, mouthparts, and reproductive organs.
		The Tree of Life at the University of Arizona contains additional information on the systematics of the Arthropoda.
		For information about on-line collections resources, try our list of Entomology Collections and our listing of Other Invertebrate Collections.
	www.ucmp.berkeley.edu /arthropoda/arthropoda.html (297 words)

	Science Biology Zoology Arthropoda (Site not responding. Last check: 2007-10-22)
		Borrow up to 125% of your home value less your remaining mortgage.
		» Find the Best Sites For arthropoda With Starware Starware search is an excellent resource for quality sites on arthropoda and much more!
		The Global Litter Invertebrate Decomposition Experiment to assess rates of decomposition while controlling for climatic factors across latitudes and biomes.
	www.whizseek.org /Science/Biology/Zoology/Arthropoda (226 words)

	GEOL 331 Lectures 29-31: Arthropoda
		Body of primitive forms is homonomous (all body segments are very similar), but in vast majority there is some degree of tagmatization (specialization and fusion of joints)
		Possible Arthropoda Phylogeny (combines some molecular and some morphological studies:
		Traditionally allied with hexapods into Uniramia (based on shared presence of uniramous limbs, terrestrial habit, head capsule, and tracheae
	www.geol.umd.edu /~tholtz/G331/331arthr.htm (851 words)

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